Hit on the head causing terrible head and stomach ache, narrow vision. What should be done?

hi i hit my head in the table s corner about 6 days ago. I got a terrible headache with really bad stomachach for 2 days. The stomachach got better, but the headache still persists. I feel like I see things little different. Kind of like narrower or wierd. What should i do now. My head still hurts and I am confused. I keep on forgetting stuff and answering questions wrong. I couldnt study either.ion I am not in a condition to pay now, really confused.